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I have seen this question but can't wrap my head around actually filtering on the taxonomy as well..

Essentially what I'm looking for is an archives page for the taxonomy such as mysite.com/movies (which the previous question answers), but to filter on custom taxonomy within the custom post type such as Settings => New York, Berlin so that you can use links such as mysite.com/movies/new-york.

Any pointers as to what my rewrite rules should be would be greatly appreciated.

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This is what I've used in the past for a similar requirement;

register_post_type('movie', array(
    'rewrite' => array('slug' => 'movie')

register_taxonomy('movie_location', 'movie', array(
    'rewrite' => array('slug' => 'movies')

 * Add rewrite rules for 'base' archives.
 * @param object $r Instance of {@see WP_Rewrite}
function my_custom_rewrite_rules(&$r)
    $rules = array(
        'movies/page/?([0-9]{1,})/?$' => 'post_type=movie&paged=' . $r->preg_index(1),
        'movies/?$' => 'post_type=movie'

    foreach ($rules as &$rule)
        $rule = $r->index . '?' . $rule;
    $r->rules = array_merge($rules, $r->rules);
add_action('generate_rewrite_rules', 'my_custom_rewrite_rules');

See the rewrite argument in register_taxonomy()? WordPress automatically creates the appropriate rewrite rules, including archive pagination!

Also note the singular use of movie in the register_post_type() rewrite argument - partly because, IMO, it's semantically correct, but more so that you don't open up a whole can of worms.

What's that can of worms exactly?

Well, otherwise you'll end up with two rewrite rules like so;

'movies/([^/]+)/?$' => 'post_type=movie&movie_location=$matches[1]'
'movies/([^/]+)/?$' => 'post_type=movie&name=$matches[1]'

Whichever one is indexed first in the rewrite rules array will always be triggered, and the other one ignored.

So say you've a got a movie named made-in-britain, but the rewrite rule for the taxonomy archive comes first, WordPress is always gonna look for movies with the made-in-britain term, rather than the movie itself!

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